Kinetics and mechanism of diethyl sulfide oxidation by sodium peroxoborate in aqueous solutions

被引:0
作者
V. L. Lobachev
L. M. Dyatlenko
M. Yu. Zubritskii
机构
[1] Litvinenko Institute of Physical–Organic Chemistry and Coal Chemistry,
来源
Kinetics and Catalysis | 2016年 / 57卷
关键词
diethyl sulfide; sodium peroxoborate; hydrogen peroxide; oxidation; kinetics;
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摘要
The kinetics of diethyl sulfide (Et2S) oxidation by aqueous sodium peroxoborate (Na2[В2(О2)2(ОН)4]) solutions in a wide acidity range (from [HClO4] = 1 mol/L to рН 12) has been studied using a kinetic distribution method. The kinetic data together with the results of 11B NMR spectroscopy demonstrate that the monoperoxoborate B(O2H)3-(OH) and diperoxoborate B(O2H)2(OH)2- anions are the active species in Et2S oxidation by sodium peroxoborate at рН 8–12. It is assumed that, at a high acidity of the medium ([HClO4] = 0.05–1.0 mol/L), peroxoboric acid (ОН)2ВООН or its protonated form (OH)2BOOH2+ are direct reactants along with Н2О2 and HOOH2+.
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页码:742 / 749
页数:7
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